/**
* @test
*/
public function should_ignore_keys_when_walking_an_associative_array()
{
// given
$variations = [];
$array = new ArrayPermuter(['a' => 1, 'b' => 2]);
// when
$array->walk(function ($variation) use(&$variations) {
$variations[] = $variation;
});
// then
$this->assertEquals([[1, 2], [2, 1]], $variations);
}
/**
* @test
*/
public function should_be_able_to_solve_an_example_of_a_vietnamese_snake()
{
// given
$array = new ArrayPermuter(range(1, 9));
$answers = 0;
// when
$array->walk(function ($n) use(&$answers) {
$answer = $n[0] + 13 * $n[1] / $n[2] + $n[3] + 12 * $n[4] - $n[5] - 11 + $n[6] * $n[7] / $n[8] - 10;
if ($answer == 66) {
$answers++;
}
});
// then
$this->assertEquals(128, $answers);
}
